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(No Model.)Y

R. BURNS.

GYGLOMETBR. No. 299,733; Patented June 3, 1884.

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"6@ e I' .Willi/IIIA :al/1711111111' H. PETERS. PlwluALithngnph'r,washington. D. c.

UNrrnn STATES PATENT OFFICE.

ROBERT BURNS, OF CHICAGO, ILLINOIS, ASSIGNOR OFv ONE-HALF TO JOHN S.W'ILLIAMS, OF SAME PLACE.

CYCLOIVI ETER.

SPECIFICATION forming part of Letters Patent No. 299,733, dated June 3,1884.

Application filed October 23,1883. (No model.)

To @ZZ whom it may concern-.- axially-arranged operating eccentric c2,which VBe it known that I, ROBERT BURNs, a citihas bearing upon a pin orstud, c?, upon the zen of the United States, and a resident of casingO,as shown in Fig. l. The face ofthe Chicago, in the county of Cook andState of' inner ratchet-wheel, c', is spaced off to form 55 5 Illinois,have invented a new'and useful Ima (hah/U, and its'hub is arranged toride or provement in Oyclometers; aud I do hereby turn on the hollow hubof the outer wheel, c, declare the following to be av full, clear, andto enable such outer wheel-hub to receive the exact description of thesame, reference being hand or pointer 0*, which moves infront of the 4.-had to the accompanying drawings, forming dial OQ to indicate thedistance traveled. The` 6o 1o a part of this specification. number ofteeth in one ratchet-disk will be one My invention relates toimprovements in more than in the other, so that in the gradual thatclass of registering mechanism known as movement oi' such disks the onehaving the odometers77 or cyclometers,77 andwhich is Aleast number ofteeth will gain the distance of specially adapted for use in the axialcavity one tooth, so that itwill require a numbeof, 6 5 15 ofvehicle-wheels to indicate and register the revolutions of such disksequal to the number of distance traveled; and my improvement hasratchet-teeth therein to return the hand or for its objects, iirst, toprovide a simple and pointer at to its original position at starting.compact device'capable of easy adaptation to A step-by-step motion isimparted to the the axial cavity in the outer end of thewheelratchet-disk at each revolution of the vehicle- 7o 2o hub; second,to afford means for locking the wheel by means of a dog or pawl, c, theface device securely in place in the hub-cavity, of which is of thewidth of both ratchet-disks, and yet permit of the ready removal of theso as to engage and operate both. This dog same for inspection by anauthorized person, or pawl is pivoted to the outer end of a lever, and,third, to -supply an improved construce', i'ulcrumed at e2 to thecasingC. The inner 75 25 tion whereby one of the registry-wheels willend of the lever is forked, so as to embrace act as a dial, while theother will carry the the operating-eccentric c2, and receive motion handor pointer. I attain such objects by the therefrom asitis carried aroundwith the revoarrangement of mechanism illustrated in the lution of thewheel. The operating-eccentric accompanying drawings, in which. c2 isheld stationary by its square extension- 8o 3o Figure l is an axialsection illustrating my pin c5, engaging in a square hole in the axleimprovement adapted to the axial cavity of a or axle-nut, as shown inFig. 1 of the drawings. vehicle-wheel hub; Fig. 2, a section of same Fis a protecting cover or face. for the dial at line w as; Fig. 3, asimilar view at lline ao C and the operating parts, which is preferablyx', and Fig. 4 is an enlarged detail axial secof glass; yet it may insome case be of metal, 8 5

3 5 tion. and made removable for the purpose of read- Similar letters ofreference indicate like ing the indicating-dial. parts in the severalviews. cisaspring-pawhwhich engages the ratchet- In the drawings, Arepresents a portion of disk to prevent their retrograde movement. thevehicle-wheel hub, B the axle, and B the By my improved arrangement ofparts the 9o 4o axle-nut. Within the axial cavity for the dial orindicating-face can be arranged to face axle-nut is arranged my improvedcyclometer, inwardly with the back of the casing, which which consistsof a circular inclosing-casing, can be made of ample strength to faceout- O, the outer diameter of which is equal to the wardly. By thismeans all liability to acciinner diameter of such cavity, and is lockeddental breakage or marring of the parts is pre- 95 4 5 within the sameby means of one or more ravented with great certainty, and access ofdust dial spring-pins, cl, 4that engage i-n one or more or other-foreignmatt-er entirely prevented. radial holes through the rim D of the wheel-The operation of my improvement is as folhub. lows: The eccentric clbeing held stationary by The registering-gearing consists of two disks,engagement with the axle or axle-nut, as above 1o 15o c c', arranged inline with the axis of the vedescribed, on each revolution the pawl-leverhicle-wheel, upon a cylindrical portion of the e will be rocked, so asto move the ratchetessentially, of two ratehet`disks having difterentnumber of ratchet-teeth, a lever and pawl common to both ratchet-wheels,and a iixed operating-cam axially arranged and connected to the axle oraxle-nut, all essentially as herein shown and described.

2. In a cyclometer, as hereinbefore described, the combination of theratehet-wheel c, formed with a dial-face, C', the ratchet-wl1eel c,provided with a hand or pointer, and eam-lever and pawl-op erating` mechanisin all essentially as herein described and shown.

3. In a eyelometer, a pair of registering ratchet-disks whose centersare in the same line as the center of the axle of the vehicle wheel, andso arranged that the dial and pointer will face inward, for the purposeset forth.

In testimony whereof witness my hand this 18th day of October, 1883.

ROBERT BURNS.

II. I). SMALLEY, A. CAMPBELL.

